From the article “The team of nanobiotechnology experts is currently working on successfully delivering DNA containing mRNA BioNTech technology into chloroplasts, the part of the plants that instruct its cells’ DNA to replicate the vaccine material”

Nanobiotechnology is the application of nanotechnologies in biological fields. Chemists, physicists and biologists each view nanotechnology as a branch of their own subject - the primary goal of nanotechnology is to create nanomachines on the scale of living cells - such as proteins, DNA, or bacteria and design them to perform complex tasks.